Thermaltake Purepower 400w

I inherited this from my brother yesterday along with a Xaser V case. It has 18a on the 12v rail and he gave me a 20-24pin adapter for powering up the motherboard. He had his C2D 6300, 3 SATA hard drives, 2 DVD burners, 5 80mm fans, fan controller(came with case) EVGA 680i motherboard, 7600gt and 1gb of Corsair XMS2 C4's running on the PSU. I am thinking about getting a 7600gt, Biostar 520-A2 motherboard, 3800x2 windsor, single DVD burner and a single 160gb SATA hard drive. I will also be running 2 or 3 fans in it. Think the PSU will be fine or should I get the 430w Thermaltake that is 40 bucks on newegg (he is running the same psu with his 6300 now with 4gb of ballistix)

I would say that 400w psu would handle the system that you have in mind. Though I am not sure about reliability of tt purepower. Is that psu that came with the case?.

If you looking for new psu get at least psu with efficiency of 80%. It's not like efficiency matters but newer better psu have efficiency of 80%.

I think it is the same model that came with the case but needed to be replaced when he first got it the psu was doa. The only thing I am worried about is the fact that it has a huge 5v rail(40a i think). It has a single 12v rail with 18a which the 7600gt is rated for. I also looked closer at the PSU yesterday and it is rated at 420w max. I am going to talk to my sister in law and see if I can hook it up in her system to test it with a multimeter without zapping myself to death lol